.modal {
    display: none; 
    position: fixed; 
    z-index: 1; 
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto; 
    background-color: rgb(0,0,0);
    background-color: rgba(0,0,0,0.4); 
    padding-top: 60px;
}

.modal-content {
    background-color: #90b9ff;
    margin: 5% auto; 
    padding: 20px;
    border: 1px solid #888;
    width: 40%; 
}
@media screen and (max-width: 600px) {
    .modal-content {
        width: 90%;
    }
}

.close {
    color: #aaa;
    float: right;
    font-size: 28px;
    font-weight: bold;
}

.close:hover,
.close:focus {
    color: black;
    text-decoration: none;
    cursor: pointer;
}

.container {
    max-width: 600px;
    margin: 0 auto;
    padding: 20px;
}